Synthesis and properties of novel aggregation-induced emission compounds with combined tetraphenylethylene and dicarbazolyl triphenylethylene moieties
作者:Xiqi Zhang、Zhenguo Chi、Haiyin Li、Bingjia Xu、Xiaofang Li、Siwei Liu、Yi Zhang、Jiarui Xu
DOI:10.1039/c0jm02824j
日期:——
A novel class of compounds containing tetraphenylethylene and dicarbazolyl triphenylethylene moieties combined with different spacers is synthesized. The compounds exhibit high thermal stabilities and aggregation-induced emission properties. The different spacers lead to differences in spatial conformation structures and spatial electron distributions, and markedly affect the thermal and photophysical properties of the compounds. The size of the aggregates formed in water–THF mixtures decreases with increasing water fractions. The time-resolved emission decay behaviors of the synthesized compounds in water–THF mixtures with water fractions from 60% to 99% show three relaxation pathways in their fluorescence decays.
我们合成了一类新型化合物,其中含有与不同间隔物结合的四苯基乙烯和二咔唑基三苯基乙烯分子。这些化合物具有很高的热稳定性和聚集诱导发射特性。不同的间隔物导致了空间构象结构和空间电子分布的差异,并显著影响了化合物的热和光物理特性。在水-THF 混合物中形成的聚合体的大小会随着水含量的增加而减小。合成化合物在水-THF 混合物中的时间分辨发射衰减行为显示,其荧光衰减有三种弛豫途径。